/* 新中式 · 六合彩 主題 */
:root {
  --bg-dark: #1a1410;
  --bg-panel: #241c17;
  --bg-input: #2d231c;
  --wood: #3d2e24;
  --border: #4a3930;
  --gold: #c9a227;
  --gold-light: #e8d48b;
  --red: #a62b2b;
  --red-light: #c94a4a;
  --red-soft: #8b3a3a;
  --ink: #e8e0d8;
  --ink-muted: #a09890;
  --serif: "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--bg-dark);
  min-height: 100vh;
  line-height: 1.6;
}

/* 背景紋理：雲紋/格柵感 */
.page-wrap {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%, rgba(166, 43, 43, 0.08) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-dark) 0%, #221a14 100%);
  position: relative;
}

.page-wrap::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 60px,
      rgba(201, 162, 39, 0.03) 60px,
      rgba(201, 162, 39, 0.03) 61px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 60px,
      rgba(201, 162, 39, 0.03) 60px,
      rgba(201, 162, 39, 0.03) 61px
    );
  pointer-events: none;
  z-index: 0;
}

/* Header */
.site-header {
  padding: 2rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(61, 46, 36, 0.6) 0%, transparent 100%);
  position: relative;
  z-index: 1;
}

.header-inner {
  max-width: 640px;
  margin: 0 auto;
}

.site-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--gold-light);
  margin: 0 0 0.25rem 0;
  letter-spacing: 0.08em;
}

.site-subtitle {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin: 0;
  font-weight: 300;
}

/* Main */
.main-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  position: relative;
  z-index: 1;
}

/* Panel */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  overflow: hidden;
}

.panel-head {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(61, 46, 36, 0.5);
}

.panel-head h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--gold);
  margin: 0;
}

/* Form */
.form {
  padding: 1.5rem 1.25rem;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row:last-of-type {
  margin-bottom: 0;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: 0.4rem;
}

.form-row input[type="text"],
.form-row input[type="number"],
.form-row input[type="datetime-local"],
.form-row input[type="date"],
.form-row input[type="time"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-row input::placeholder {
  color: var(--ink-muted);
  opacity: 0.8;
}

.form-row input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(201, 162, 39, 0.2);
}

.current-time-group {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.current-time-group input {
  flex: 1;
}

.time-split {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.time-split input {
  width: 64px;
  padding: 0.55rem 0.65rem;
  text-align: center;
}

.time-sep {
  color: var(--ink-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.two-cols {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.two-cols .col {
  flex: 1;
  min-width: 140px;
}

.two-cols .time-col {
  min-width: 150px;
}

.number-inputs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.5rem;
}

.number-inputs input {
  text-align: center;
  font-weight: 500;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

/* Buttons */
.btn {
  padding: 0.6rem 1.2rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--red);
  color: var(--gold-light);
  border-color: var(--red-soft);
}

.btn-primary:hover {
  background: var(--red-light);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--gold);
}

.current-time-group .btn {
  height: 100%;
  white-space: nowrap;
}

/* Results */
.results-panel {
  margin-top: 2rem;
}

.results-panel.hidden {
  display: none;
}

.results-content {
  padding: 1.25rem 1.25rem 1.5rem;
}

.result-section {
  margin-bottom: 1.5rem;
}

.result-section:last-child {
  margin-bottom: 0;
}

.result-section h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--gold);
  margin: 0 0 0.5rem 0;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
}

.result-section p,
.result-section ul {
  margin: 0 0 0.5rem 0;
  font-size: 0.9rem;
  color: var(--ink);
}

.result-section ul {
  padding-left: 1.25rem;
}

.result-section li {
  margin-bottom: 0.25rem;
}

/* 核心幸運號 · 大號碼展示 */
.core-numbers {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.core-num {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--gold-light);
  background: var(--red-soft);
  border: 2px solid var(--gold);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* 注號矩陣：每組 6 個號 */
.bet-group {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  margin-bottom: 0.75rem;
}

.bet-group:last-child {
  margin-bottom: 0;
}

.bet-group-title {
  font-size: 0.8rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.bet-numbers {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.bet-num {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  background: var(--wood);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.bet-group-desc {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-top: 0.4rem;
}

/* 策略區塊 */
.strategy-box {
  background: rgba(166, 43, 43, 0.15);
  border: 1px solid var(--red-soft);
  border-radius: 4px;
  padding: 1rem;
  margin-top: 0.5rem;
}

.strategy-box p {
  margin: 0.25rem 0;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--ink-muted);
  position: relative;
  z-index: 1;
}

/* 載入狀態 */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

@media (max-width: 480px) {
  .number-inputs {
    grid-template-columns: repeat(3, 1fr);
  }

  .two-cols {
    flex-direction: column;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}